Hello,
01. Go to Theme Settings > Footer and verify the Footer Content. If you’re utilizing widget content, go to Appearance > Widgets to modify the footer widget.
For HTML Block content, edit the HTML Blocks content using the page builder to update the logo.
02.You can change the logo size in the Logo element settings:
https://ibb.co/hFxNgmc
Please note the logo cannot be higher than the row height: https://xtemos.com/docs-topic/header-rows-and-columns-configuration/
Best Regards.